timerID = null;

function ScrollUp(speed){
if(document.getElementById){
if(parseInt(txt.style.top) < 0){
txt.style.top = parseInt(txt.style.top) + speed + "px"; } 
timerID = setTimeout("ScrollUp("+speed+")",30) }}

function ScrollDown(speed){
if(document.getElementById){                        
if(parseInt(txt.style.top) > cnt.offsetHeight - txt.offsetHeight){ 
txt.style.top = parseInt(txt.style.top) - speed + "px"; }
timerID = setTimeout("ScrollDown("+speed+")",30) }}

function ScrollStop(){
if(document.getElementById){
clearTimeout(timerID); }}

function nwScrollInit() {
if (document.getElementById) {
cnt = document.getElementById("nwcont");
txt = document.getElementById("nwtext");
txt.style.top = 0; }}